Samatova Shoira Yuldashvna, Abdirova Mukhabbat Turdialievna, Zhuraev Shukhrat Coal Abdusator, Temirova Lobar Zokir kizi and Khamraev Shirinbek Gulom ugli 2023. REPAIR METHODS AND TECHNICAL CERTIFICATION OF BOILERS . Journal of new century innovations. 27, 4 (Apr. 2023), 65–73.